diff --git a/web/requirements.txt b/web/requirements.txt
index 61f85e2..7864cdb 100644
--- a/web/requirements.txt
+++ b/web/requirements.txt
@@ -1,4 +1,5 @@
 mailmanclient==3.3.5
 postorius==1.3.8
 hyperkitty==1.3.7
-django-mailman3==1.3.9
\ No newline at end of file
+django-mailman3==1.3.9
+importlib_resources<6.0